JPS6262360B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic musical instrument, and particularly aims to simplify the operation of storing chords.

With the chord storage device of conventional electronic musical instruments, when storing a chord, first press the record button to put the chord storage device in the record state, select the method for determining the chord using the performance mode designation button, and then switch to that performance mode. Therefore, I decided on a chord by pressing the keys, etc.
Furthermore, it was necessary to input the chord length specification, which determines the length of the chord. The performance mode designation button refers to the one-finger mode, which is a playing method in which a chord is determined by pressing one key on the manual keyboard, and the playing method in which a chord is determined by pressing multiple manual keys according to the constituent notes of the chord. This is a button that determines performance modes such as fin guard and separate pedal mode, which is a performance method in which a chord is determined by pressing the constituent notes of the chord on the hand keyboard and selecting the base note of the chord using the foot keyboard. . (Hereinafter, these will be described as one-finger mode, finger mode, and separate pedal mode, and these will be collectively referred to as performance mode.) FIG. 1 shows a chord storage device of a conventional electronic musical instrument. To explain this, the manual keyboard 1 is connected to the pressed key note name detection circuit 2, and the note name corresponding to the key pressed on the manual keyboard 1 is detected, and manual keyboard note name information is obtained. The foot keyboard 3 is connected to a pressed key note name detection circuit 4, which detects the note name corresponding to the key pressed on the foot keyboard 3, and obtains foot keyboard note name information. Reference numeral 5 denotes a one-finger chord type designation circuit, which specifies information on the type of chord (major, minor, seventh, etc.) in the one-finger mode, and obtains one-finger chord type information. Reference numeral 6 denotes a performance mode designation circuit which designates a performance mode according to a performance mode such as one-finger or finger selected by the performer. 7 is a chord discrimination circuit, into which performance mode information, manual keyboard note name information, foot keyboard note name information, and chord type information for one finger are input, and according to the performance mode, manual keyboard note name information, foot keyboard note name information, and one finger Determine the chord being pressed based on the chord type information,
Detects chord information (C major, E minor, etc.). Reference numeral 8 denotes a chord information detection device, which, as described above, is composed of a hand keyboard 1, a pressed key note name detection circuit 2, a foot keyboard 3, a pressed key note name detection circuit 4, and a one-finger chord type designation circuit 5. This is a device that detects chord information of the keys being pressed according to the performance mode. Reference numeral 9 denotes a chord length designation circuit which outputs information on the duration of the chord (one bar, half a bar, etc.), and a writing circuit 10 writes the chord information and length information into the memory 11.

However, with this configuration, the chord information detection device 8 does not have a function to automatically detect the performance mode, and when storing a chord, the performance mode designation circuit 6 must be operated each time. There was a problem in that it was necessary to specify the performance mode using the button, and the operation was very cumbersome.

The present invention provides an electronic musical instrument that simplifies the operation of storing chords by providing a function to automatically detect the performance mode based on the state of the manual keyboard, foot keyboard, one-finger chord type designation circuit, etc. This is what we provide.

An embodiment of the present invention will be described below based on FIGS. 2 to 6.

Fig. 2 is a block diagram of one embodiment of the present invention;
The figure is a sequence flowchart of the manual keyboard information detection circuit, and FIG. 4 is a sequence flowchart of the chord discrimination device.

In FIG. 2, the manual keyboard 1 is connected to a manual keyboard information detection device 14 consisting of a pressed key note name detection circuit 12 and a pressed key number detection circuit 13, and is connected to a manual keyboard information detection device 14 that includes a pressed key note name detection circuit 12 and a pressed key number detection circuit 13. name and number of keys pressed are detected.

FIG. 3 shows the sequence of the manual keyboard information detection device 14. The hand keyboard information detection device 14 includes four note name information registers and one key press number register, which are also shown in FIG. This sequence will be explained below. The pitch name information register and the key press number register are first cleared, and then scanning of the manual keyboard 1 is started. If keys are pressed by scanning the manual keyboard 1, pitch name information corresponding to the keys being pressed on the manual keyboard is sequentially stored in the pitch name information register. At the same time, the number of keys pressed is counted,
The count result is accumulated in the key press number register. When the number of pressed keys accumulated by the key pressed number register reaches four or more notes, scanning is stopped and the sequence is ended. When the number of keys pressed is less than 4 or when there are no keys pressed,
It is determined whether all the manual keyboards have been scanned, and if all the scans have not been completed, the sequence returns to the keyboard scan sequence, and if all the scans have been completed, the sequence is ended. In this way, by the sequence operation according to FIG. 3, the manual keyboard information detection device 14 stores the note name information and the number of pressed keys of the manual keyboard 1 in the respective registers.

In FIG. 2, the foot keyboard 3 is connected to a foot keyboard information detection device 17 consisting of a pressed key note name detection circuit 15 and a pressed key detection circuit 16. , detects whether or not a key is pressed. In the case of a foot keyboard, the note name information may be one note. Therefore, it is not necessary to detect the number of pressed keys, and it is only necessary to detect whether or not a key is pressed. Note that the sequence of this foot keyboard information detection device 17 may be the same as the sequence of the hand keyboard information detection device 14 (FIG. 3), so the details will be omitted.

Reference numeral 20 in FIG. 2 is a performance mode detection circuit, which receives information on the number of keys pressed on the manual keyboard obtained from the number detection circuit 13 of pressed keys;
The performance mode is automatically detected based on the foot keyboard key depression information obtained from the key depression detection circuit 16. Here, the sequence of the performance mode detection circuit 20 will be explained based on FIG. First, the pedal keyboard key press information is determined, and if the foot keyboard is pressed, the performance mode becomes separate pedal, and if the foot keyboard is not pressed, the manual keyboard key press information is determined, If only one key is pressed on the manual keyboard, it will be in one finger mode, and if two or more keys are pressed, it will be in finger mode.
Each of these modes is stored in the performance mode register shown in FIG.

In FIG. 2, reference numeral 18 is a chord type designation circuit, which designates the type of chord (minor, seventh, etc.), and outputs chord type designation information consisting of information on the presence or absence of designation and chord type information in the case of designation. .

In FIG. 2, reference numeral 19 denotes a chord discrimination circuit, which receives manual keyboard note name information obtained from the depressed key note name detection circuit 12,
Based on the pedal note name information obtained from the pressed key note name detection circuit 15 and the chord type specification information specified by the chord type specification circuit 18, the chord is determined according to the performance mode detected by the performance mode detection circuit 20 ( C major, E minor, etc.).

Figures 5 and 6 show the sequence of the chord discrimination circuit, and the chord information includes the root note (C, E, etc.) and type (major minor, etc.) of the chord.
is obtained. This sequence will be explained below with reference to FIGS. 5 and 6. A root note register for storing the root note of the determined chord and a type register for storing the type of chord are used as registers, and these are also shown in FIG. In FIG. 5, the root note register and type register are reset for the first time, and the performance mode detected by the performance mode detection circuit 20 is determined. In the case of one finger, manual note name information is stored as the root note, and major is stored as the type. In the case of a finger guard and in the case of a separate pedal, chord discrimination is performed in a sequence as shown in FIG. The difference in chord discrimination between FinGuard and separate pedals is that the note name information to be referenced is manual note name information for FinGuard, and foot keyboard note name information and manual keyboard note information for separate pedals. Yes, but the concept is the same. As shown in Figure 6, it is sequentially determined which chord the pitch name information corresponds to, and if the pitch name information matches any chord, the type of chord and root note are combined, and the pitch name information is If does not match any chord, one note from the note name information is selected as the root note and stored in the root note register, and the major is stored in the type register as chord type information. As shown in FIG. 5, the root note information and type information obtained in the above manner are determined by the chord designation presence/absence information of the chord type designation circuit 18 in FIG. The information is corrected to the type information of the designated circuit 18.

The chord information (root note and type) obtained as described above by the chord discriminating device 21 in FIG. .

FIG. 7 shows an embodiment in which there are two types of performance modes, one finger and finger guard, in which the pressed keys on the manual keyboard 1 are converted into note name information by the pressed key note name detection circuit 12. Chord discriminator 2 with a sequence equivalent to that in the fine guard mode
1, the same chord discrimination as in the sequence of FIG. and type), and the chord is written into the memory 11 by the writing circuit 10 together with the chord length information from the chord length specifying circuit 9.

Figure 8 shows the chord type designation circuit 2 in Figure 7.
The second designation input device is constructed using a foot keyboard, and is intended to obtain four types of chords depending on the on/off states of the black keys and white keys.

FIG. 9 summarizes the operation sequence of FIG. 8 as a flowchart. To explain this sequence, depending on the state of the keys on the foot keyboard, if both the white and black keys are on, it is determined that it is a minor seventh, if only the white key is on, it is a seventh, and if only the black key is on, it is determined that it is a minor, and the chord is played. As soon as it is stored in the type register, the chord is designated, and if the pedal is not pressed, no chord is designated. If there is no chord designation, the chord type in FIG. 7 is major, and four types of chords are obtained: major, minor, seventh, and minor seventh.

Note that the manual keyboard information detection device 14, foot keyboard information detection device 17, chord discrimination device 21, etc. shown in FIG.
It goes without saying that the sequences shown in FIGS. 6 and 6 may be executed by a program. The same applies to the embodiments shown in FIGS. 7 to 9.

As described above, according to the present invention, since the performance mode is determined depending on the number of keys pressed when storing a chord, there is no need to specify the performance mode each time, and the operation is simplified and You can reduce mistakes.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of a conventional example, Fig. 2 is a block diagram of an embodiment of the present invention, Fig. 3 is a sequence flowchart of a manual keyboard information detection circuit, and Fig. 4 is a sequence flowchart of a performance mode detection circuit. ,
FIG. 5 is a sequence flowchart of a chord discrimination circuit, FIG. 6 is a sequence flowchart of chord discrimination, FIG. 7 is a block diagram of another embodiment of the present invention, and FIG. 8 is an example of a chord type designation circuit. The block diagram shown in FIG. 9 is a sequence flowchart of the chord type designation circuit. 1... Hand keyboard, 3... Foot keyboard, 7... Chord length designation circuit, 11... Memory, 14... Hand keyboard information detection device, 17... Foot keyboard information detection device, 18...
Chord type designation circuit, 19...Chord discrimination circuit, 20
. . . performance mode detection circuit, 21 . . . chord discrimination device, 22 . . . chord information detection device.

Claims (1)

[Claims] 1. Keyboard information detection including a keyboard, a pressed key note name detection circuit that detects the note name corresponding to the pressed key of the keyboard, and a pressed key number detection circuit that detects the number of pressed keys of the keyboard. means, major, minor,
a chord type specifying means for specifying the type of chord such as septance; a performance mode detection circuit that determines a performance mode based on the output of the number of pressed keys detection circuit; and the output of the performance mode detection circuit and the pressed key note name detection circuit. and chord discrimination means for automatically detecting a chord based on the output of the chord type specifying means and the output of the chord type specifying means.